Centrifugal trap.



No. 666,H8. Patented Ian. l5, I90l. B. 0. TILDEN.

CENTRIFUGAL TRAP.

(Application filed Nov. 11, 1899.)

(No magi.)

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Bert 0. Tilaen.

UNITED STATES PATENT OFFICE.

BERT OLEN TILDEN, OF DETROIT, MICHIGAN.

CENTRIFUGAL TRAP.

SPECIFICATION forming part of Letters Patent No. 666,1 18, dated January15, 1901.

Application filed November 11, 1899. Serial No. 736,610. (No model.)

To all whom it may concern.-

Be it known that I, BERT OLEN TILDEN, a citizen of the United States,residing in Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and useful Improvements in Centrifugal Traps, of

which the following is a specification.

This invention relates to an improvement in traps and is shown appliedto a pot-trap, although it is not limited thereto.

Primarily the object of my invention is the provision of means in a trapof any suitable kind for causing a centrifugal action or whirl of theliquid as it enters such trap, whereby the lighter foreign bodiescontained in the liquid-such as grease, &c.-are thrown to the center andin this Way are more readily carried off through the effluent-pipe.

In carrying out this invention the inletpipe, which is threaded into thebody of the trap, as is usual, is equipped with a deflector, whichcauses the liquid as it enters the trap to assume a rotary motiontherein. For cooperation with this deflector I provide the usual plug orscrew, removably attached to the bottom of the trap, with a verticalstud or projection, which when the Water or other liquid is set intorotary motion will aid in establishing the central passage or vent foundin all whirling bodies of liquid and in whirlpools in nature. This plugor projection also acts as a means upon which threads or other similarforeign bodies may be wound, and, it being readily removable, the trapcan be cleaned without effort and its efflciency therefore very muchincreased.

Broadly considered, I am aware that what is known as a centrifugal trapis not new,

and my invention is intended as an improvement upon the well-known formof centrifugal trap in which the outlet-pipe is located tangentially tothe circumference of the trap and the liquid is thereby caused toreceive a rotary motion. In this form of trap, however, it has beenfound in practice that sediment and foreign bodies are not at all timesremoved, and the problem has been to devise a means by which this resultcould be accomplished.

In the accompanying drawings, in which like numerals designate likeparts throughout the several views, Figure 1 is a plan view,

. by dotted lines.

partially broken away, showing one form of my improvement. Fig. 2 is aside elevation, partially in section, illustrating the deflector and theplug or trap-screw provided with a vertical projection. Fig. 3 is a sideelevation of a modification of the trap, in which the deflector on theinlet-pipe is illustrated Fig. 4 is a view of the removable plug orprojection employed in this modification; and Fig. 5 is a view ofanother form of the deflector, whereby it may be removably applied tothe end of the inlet-pipe.

Referring to the drawings, the trap is designated in a general way bythe numeral 5 and is composed, as illustrated, of two sections 6 and 7,united by an intermediate coupling or nut 8. Coupled to the section 7 isthe elbow 9, attached to the inlet-pipe 9, and removably united to thesection 6 is the outlet or efliuent pipe 10, said pipes and.trap-sections being so arranged and organized that they may be adjustedrelatively to each other in the manner set forth in my Patent No.640,430, dated January 2, 1900.

The numeral 11 designates a deflector, which may be either integral withthe elbow 9 of the inlet-pipe 9, threaded into the lower portion of thetrap-body, as shown in Fig.2, or it may be made removable from saidelbow and united thereto by screw-threads,as shown at 11' in Fig. 5, ifdesired. If made integral with the elbow 9, the end of said elbow may besimply cut out and then shaped to form the deflector in the mannerillustrated in said Fig. 2, or said deflector may be cast in the desiredform as a part of the elbow, whereas in Fig. 5 the deflector 11 is aremovable piece which may be applied to the elbow 9 by a screwthreadedconnection or detached therefrom, if desired.

Located in the bottom of the trap is the usual trap-screw or plug 12,(shown in Fig. 2,) threaded in said trap portion and provided with avertical projection 13 for a purpose hereinafter stated.

In the form of the invention shown in Figs. 1 and 2 the liquid enteringthe trap by way of the inlet-pipe 9' and elbow 9 impinges against thewall of the deflector 11 and is caused thereby to change its course andto assume a rotary motion, or if in rotary motion to continue the same,this action being aided by the plug or projection 13, which assists inmaintaining the usual passage or vent througHwhich'the air entering thewater'is drawn by suction. After leaving the upper portion of thetrap-body the Water or other liquid passes off from the same by means ofthe effluent or exit pipe 10, which leads to a suitable connectioncommunicating with the sewer.

It is of course to be understood that the inlet-pipe 9', leading intothe lower section 7 of the trap, constitutes the outlet-pipe for awashbasin, lavatory, or other device. well-known fact that when suchawashbasin orlavatory is filled and the plug is removed the water in itsexit therefrom will at once rotate and Will have formed in its center acore or duct, due to its centrifugal action and the inrush of air atthis particular time. Thisiaction of the Water causes all grease, &c.,to be thrown toward the center and to pass into the waste-pipe at agreater velocity than the water would naturally pass under the usualinfluence of atmospheric pressure, and if the water should be warm theair rushing in through the central core or duct would naturally have atendency to congeal the greasy particles. This fluid as it runs from thelavatory through the waste-pipe 9 and elbow 9 to the trap-inlet istherefore usually in rotary motion, and as it strikes the deflector itwill continue this motion and will not fill the air core or duct, andtherefore the greasy particles will still be retained at the center, andthe air core or duct being maintainedv aids in giving a greater liftingforce to the'water as it enters the trapand passes through the same. Asabove stated, the plug 13 aids in maintaining this central air core orduct, and practical experience has proved that in a trap of thisconstruction the tendencyof greasy particles to adhere to the Wallsthereof is practically eliminated. Furthermore, as will be obvious, ifthread or other fibrous material should enter the trap through the elbow9, these materials if retained in the trap would naturally tend to wrapor wind around the central core or plug 13, and as this core may readilybe removed it will be seen that the trap as thus constructed is one ofgreater eff ciency and is to all intents and purposes a self-cleansingtrap, for it is seldom that such threads, fibrous material, or otherforeign bodies will not be carried off with the Water as it leaves thetrap.

. In the construction illustrated in Fig. 3 the deflector 11, either asan integral part of the elbow 9 or removable. therefrom, as shown at llin Fig. 5, is employed. In this construction the bottom of the trap-bodyis so shaped that a spiral configuration 1 4: is obtained, this spiralasit rises terminating at a point just above the end of the elbow 9 and ofcourse abovethe deflector 11 or 11. In this modification a plugl5,having anexteriorly-threaded portion 15 and below that a flange 16for con- It is a tact with the exterior wall of the trap, is provided.

In'o'peration the water or other liquid entering from the pipe 9 andelbow!) is caused to change its course by the deflector 11 and is guidedand lifted during its centrifugal motionfby the spiral plate 14:. Byterminating this spiral plate above the inlet-opening of the elbow 9 noobstruction to the passage of the rotating fluid is encountered, andsaid fluid in its whirling action causes the lighter foreign particlescontained therein to be thrown to the center of the trap and is forcedfrom said .trap, carrying all sediment or foreign material with it.

While my invention, as above stated, is shown applied to a particularform of sectional pot-tra p, yet it is distinctly to be understood thatit is not limited thereto, for, as is obvious, it may be applied ineither of the forms shown to grease-traps and trapsof other suitableconstructions.

By dividing thetrap in the manner set forth in my patent above mentionedthe inner walls of the sections thereof may be readily made smooth bytooling, whereby when the trap is assembled a smooth-bore cylinder isproduced and foreign bodies are prevented from adhering to the wallsthereof. Furthermore, liquid entering a trap of this kind will rotateuntil it reaches the effluent-pipe and will have greater velocity, aswell as lifting power, as there will be less friction-between the sameandthe smooth walls of the trap, and heavier substances carried by theliquid-such as sand, screws, nails, or other foreign bodieswill bethrown from the center by centrifugal force and will act as scouringagents to keep said smooth walls clean.

No claim is made to the divided trap shown and described, for itconstitutes the subjectmatter of my Patent No. 640,430 above mentioned.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

1. In a trap, the combination, with a trapbody, of an inlet-pipecarrying a device for do- I fleeting the course ofthe fluid passingthrough said pipe and thereby causing the same to 1'0- tate; and anoutlet-pipe.

2. In a trap, the combination, with an inletpipe having a deflector, ofa plug orprojection located in the trap-body, and an exit- P P 3. In atrap, the combination, with an inletpipe having a deflector, of aremovable screw or plug carryinga projection cooperating with saiddeflector in producing rotary motion of the fluid entering the trap, andan outlet-pipe.

4. In a trap, the combination, with a trapbody made insections, of meansfor uniting said sections so that they may be adjusted one upon theother; an inlet-pipe carrying a deflector and connected .with one ofsaid sections said deflector servingto changethe IIO course of the fluidand thereby cause the same trap sections; a central plug or projection;to rotate Within the trap-body; and an exitand an exit-pipe connectedwith the top secpipe connected with the other of said sections. tion ofthe trap.

5. In a pot-trap, the combination, with the BERT OLEN TILDEN. 5trap-body composed of sections adj ustably Witnesses:

united, of an elbow carrying a deflector, said JOHN J OSHIRE, elbowbeing threaded into the lower of said CHARLTON E. PARTRIDGE.

